Parametrize C++ splay tree with allocator.

src/globals.h

 // Copyright 2006-2009 the V8 project authors. All rights reserved.
 // Redistribution and use in source and binary forms, with or without
 // modification, are permitted provided that the following conditions are
 // met:
 //
 //     * Redistributions of source code must retain the above copyright
 //       notice, this list of conditions and the following disclaimer.
 //     * Redistributions in binary form must reproduce the above
 //       copyright notice, this list of conditions and the following
 //       disclaimer in the documentation and/or other materials provided
@@ skipping 243 matching lines @@
 class RegExpNode;
 struct RegExpCompileData;
 class RegExpTree;
 class RegExpCompiler;
 class RegExpVisitor;
 class Scope;
 template<class Allocator = FreeStoreAllocationPolicy> class ScopeInfo;
 class Script;
 class Slot;
 class Smi;
+template <typename Config, class Allocator = FreeStoreAllocationPolicy>
+    class SplayTree;
 class Statement;
 class String;
 class Struct;
 class SwitchStatement;
 class AstVisitor;
 class Variable;
 class VariableProxy;
 class RelocInfo;
 class Deserializer;
 class MessageLocation;
@@ skipping 337 matching lines @@
                   CMOV = 15,   // x86
                   RDTSC = 4,   // x86
                   CPUID = 10,  // x86
                   VFP3 = 1,    // ARM
                   ARMv7 = 2,   // ARM
                   SAHF = 0};   // x86
 
 } }  // namespace v8::internal
 
 #endif  // V8_GLOBALS_H_